Galaxies Producing Low-redshift Damped Lyman-alpha Quasar Absorbers

Details Galaxies Producing Low-redshift Damped Lyman-alpha Quasar Absorbers Galaxies Producing Low-redshift Damped Lyman-alpha Quasar Absorbers

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...211.8403g&link_type=abstract

American Astronomical Society, AAS Meeting #211, #84.03; Bulletin of the American Astronomical Society, Vol. 39, p.875

Physics

Optics

Scientific paper

We will summarize our recent and ongoing studies of the physical properties of low-redshift damped Lyman-alpha (DLA) and sub-DLA absorbers. Our observations include adaptive optics (AO) imaging of DLA/sub-DLA candidate galaxies using Gemini-N Hokupa'a and Keck II laser guide star
AO, and emission line spectroscopy of some candidate galaxies using Keck LRIS and Gemini-N/Gemini-S GMOS. The AO imaging allows us to estimate the morphologies, impact parameters, and luminosities of the galaxies. The spectroscopy allows us to estimate the star formation rates, dust extinction, and emission-line metallicities of the absorbing galaxies. We will discuss implications of these results for the nature of the absorbers. SG and VPK gratefully acknowledge partial support from NSF grants AST-0206197 and AST-0607739 to the University of South Carolina.

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